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The structure of passenger counting and public transport tracking system of smart city and structural model based on the method of complex discrete systems simulation Petri nets are developed in the article. Reachability graph of the system states that allows to investigate the dynamics of the system is given. The functioning of the implemented system of passenger traffic and public transport tracking...
This paper describes the spin effects of GPS signals on a multi-antenna mounted vehicle. To receive GPS signals continuously on a spinning vehicle, multiple patch antennas with overlapped antenna beamwidths can be used. First, this study focused on a four-antenna configuration. In this configuration, signal nulls or severe attenuations occurred due to destructive interference from mixed signals, and...
Many Vehicular Ad Hoc Networks (VANETs) applications require the vehicle's location information to be available at anytime and anywhere within the network. Vehicle-to-vehicle (V2V) communication allows the exchange of mobility data, which includes position, speed and heading information, that can be used for location estimation. However, if the exchanged mobility data contains invalid or wrong information,...
In this paper, we propose WiAVL, a novel Automatic Vehicle Location (AVL) system based on Wi-Fi Device-to-Device (D2D) communications. WiAVL can monitor, record and notify the location of public transportation vehicles with low communication cost by leveraging Wi-Fi Beacons. In addition, we address the interference problem. A proof-of-concept prototype is implemented. Experimental results are also...
Urban mobility, especially in Metropolitan Areas has drawn the attention of scientists for many decades. As increasing volumes of urban data are captured and become available, new opportunities arise for data-driven analysis that can lead to improvements in the lives of citizens through evidence-based decision support systems and policies. Sensing and wireless networking technologies are increasingly...
There are several sources of error affecting the accuracy of underwater ranging using acoustic signals. These errors have a direct impact in the performance of Long Baseline (LBL) navigation system. This paper presents the results of experiments designed to characterize the most significant sources of errors in acoustic ranging. For the experiments, we use a set of acoustic devices and compare distances...
This paper describes the implementation of a low-cost Autonomous Surface Vehicle (ASV) using a behavior-based software, the MOOS-IvP. The platform used is a catamaran boat driven by two direct current motors as the propulsion system. It is embedded with a processing board with an Arduino microcontroller, a low-cost Inertial Measurement Unit (IMU) with accelerometers, gyroscopes and magnetometers,...
This paper presents a new generation of man portable acoustic navigation buoys. The aim of these buoys is to facilitate the deployment of an underwater acoustic positioning system for the operation of Autonomous Underwater Vehicles. Each buoy includes only the vital modules required for the most typical schemes of underwater acoustic navigation, packed in a small but dynamically stable platform for...
Presented herein is a study on the use of low-cost technology for the data collection and clasification on roadway pavement defects, by use of sensors from smartphones and from automobiles' on-board diagnostic (OBD-II) devices while vehicles are in movement. The smartphone-based data collection is complimented with artificial intelligence-based (AI) pattern recognition techniques for the classification...
Aquatic unmanned robotic systems have gained popularity due to their abilities to perform a wide range of applications at low cost and no risk to human lives. This research investigates the development of the navigation system of “HPftN”, an Autonomous Surface Vehicle (ASV). The PID control system composed of 3 Arduino UNO boards, a GPS, a Compass and 4 thrusters can navigate the 2,86 meter long and...
The lack of traffic signal intelligibility and insufficient information about road conditions is often cited as an important factor that leads to an increase of road accidents and fatalities. To overcome this problem, a number of systems have been developed in order to signal events to emergency points and designed to supply drivers with information about roads conditions to avoid approaching risks...
Since the MIMU/GPS has advantages of low-cost and small-size, it can be widely used in the field of vehicle navigation. For the traditional MIMU/GPS integrated navigation system, the Kalman filter is used to fuse the information of MIMU and GPS to achieve the goal of navigation and positioning of vehicle. GPS provides users with highly accurate three-dimensional position and velocity informations...
Probe vehicles consist in mobile traffic sensor networks that evolve with the flow of vehicles, transmitting velocity and position measurements along their path, generated using GPSs. To address the urban positioning issues of GPSs, we propose to replace them with inertial measurement units onboard vehicles, to estimate vehicle location and attitude using inertial data only. While promising, this...
Weproposed a Position Prediction based Multicast Routing (PPMR) for VANET with the objectives of alleviating the broadcast storm problem of multicast tree discovery and simultaneously minimizing the number of forwarding vehicles. A unicast protocol, Position Prediction based Unicast Routing (PPUR) serving as a base for our multicast protocol is also proposed. With the help of Global Positioning System...
An Android application (app), called Real Time Range Tracker, was developed as part of a Naval Innovation Science and Engineering program and provides near real-time “line of sight” range between mobile smart devices. In order to properly design tests and analyze test results, the accuracy of the data generated by the app must be fully understood along with any associated measurement uncertainties...
Nowadays accidents and vehicle theft cases of two-wheelers are increasing at an alarming rate. In present systems, the speed is monitored by using cameras, speed governors etc. These systems have geographical, visibility and applicability restrictions. These systems can't be used completely for two-wheeler because it will affect the stability of the vehicle and cause accidents. Here we are proposing...
The development of a semi-autonomous intimation system to parents about the presence of their child in school or college campus is the objective of this Project. If a student bunked his/her class or abducted from school or college, their parents might know that after 6pm only. Here we proposed a new solution to send quick intimation to their parents about the presence of students through school or...
The freight tracking system provides security to the freights. It is a more common occurrence of various theft activities in goods train. The GPS and GSM tracking systems have been introduced to avoid such undesirable situations. This paper is also provided with the concept of One Time Password (OTP) system and fingerprint system for the purpose of secured transportation. The full fledged security...
Vehicular Ad Hoc Network (VANet) enables Vehicle to Vehicle (V2V) communication where vehicles exchange data while moving at different speeds. Since Ad Hoc network does not rely on any fixed infrastructure, vehicles are organized in a well-defined dynamic topology. However, the spectrum allocated to V2V suffered from lack of capacity due to increase in number of vehicles. On the other hand, Device...
Accurate positioning is needed for agricultural vehicles now and in the future. Position is currently needed for mapping, precision farming, auto steering vehicles and for agro robotic solutions. Thus two kinds of errors is defined for GPS receivers such as relative accuracy and the absolute accuracy, which is measured positions to their real position. In this paper to overcome the above said problems...
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